Exclude libjingle_peerconnection_{jni,so} targets from Chromium builds.

webrtc/api/api.gyp

 # Copyright (c) 2015 The WebRTC project authors. All Rights Reserved.
 #
 # Use of this source code is governed by a BSD-style license
 # that can be found in the LICENSE file in the root of the source
 # tree. An additional intellectual property rights grant can be found
 # in the file PATENTS.  All contributing project authors may
 # be found in the AUTHORS file in the root of the source tree.
 
 {
   'includes': [ '../build/common.gypi', ],
   'conditions': [
     ['os_posix == 1 and OS != "mac" and OS != "ios"', {
       'conditions': [
         ['sysroot!=""', {
           'variables': {
             'pkg-config': '../../../build/linux/pkg-config-wrapper "<(sysroot)" "<(target_arch)"',
           },
         }, {
           'variables': {
             'pkg-config': 'pkg-config'
           },
         }],
       ],
     }],
-    ['OS=="android"', {
+    # Excluded from the Chromium build since they cannot be built due to
+    # incompability with Chromium's logging implementation.
+    ['OS=="android" and build_with_chromium==0', {
       'targets': [
         {
           'target_name': 'libjingle_peerconnection_jni',
           'type': 'static_library',
           'dependencies': [
             '<(webrtc_root)/system_wrappers/system_wrappers.gyp:field_trial_default',
             '<(webrtc_root)/system_wrappers/system_wrappers.gyp:metrics_default',
             'libjingle_peerconnection',
           ],
           'sources': [
@@ skipping 179 matching lines @@
             'quicdatatransport.h',
           ],
           'export_dependent_settings': [
             '<(DEPTH)/third_party/libquic/libquic.gyp:libquic',
           ],
         }],
       ],
     },  # target libjingle_peerconnection
   ],  # targets
 }